Rff
abbr. remote fiber fluorimetry 远距离光纤荧光测定法
🗣️ 情景例句
I don't know how to solve the problem. Will you help me out?
我不知道该怎么解决这个问题。你能帮我吗？
He knows most who speaks least.
大智者寡于言。
The normal price of a ticket is $2,000!
而正常票价是2，000英镑！